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im from Argentina and i bought a notebook Bangho Futura 2521. I have installed Ubuntu 12.10 and i cant work the wifi...

The command lspci shows:

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5289 (rev 01)
03:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI  
        Express Gigabit Ethernet controller (rev 0a)

the command iwconfig shows:

eth0 no wireless extensions.
lo no wireless extensions.

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The Realtek RTL8111/8168B are for wired network connections. Not for wireless. Which wireless setup is used? – Hennes Apr 6 '13 at 16:15

Please run the terminal command:

lspci -nn

Is your device identified as 10ec:8723? If so, check post #24 here:

There are a number of questions here that use an earlier version of the driver and error out at base.c:320:6: error: ‘IEEE80211_HW_BEACON_FILTER’. The later version I linked does not.

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